public class ParentChildrenBlockJoinQuery extends Query
Constructor and Description |
---|
ParentChildrenBlockJoinQuery(BitSetProducer parentFilter,
Query childQuery,
int parentDocId)
Creates a
ParentChildrenBlockJoinQuery instance |
Modifier and Type | Method and Description |
---|---|
Weight |
createWeight(IndexSearcher searcher,
boolean needsScores,
float boost)
Expert: Constructs an appropriate Weight implementation for this query.
|
boolean |
equals(java.lang.Object obj)
Override and implement query instance equivalence properly in a subclass.
|
int |
hashCode()
Override and implement query hash code properly in a subclass.
|
Query |
rewrite(IndexReader reader)
Expert: called to re-write queries into primitive queries.
|
java.lang.String |
toString(java.lang.String field)
Prints a query to a string, with
field assumed to be the
default field and omitted. |
classHash, sameClassAs, toString
public ParentChildrenBlockJoinQuery(BitSetProducer parentFilter, Query childQuery, int parentDocId)
ParentChildrenBlockJoinQuery
instanceparentFilter
- A filter identifying parent documents.childQuery
- A child query that determines which child docs are matchingparentDocId
- The top level doc id of that parent to return children documents forpublic boolean equals(java.lang.Object obj)
Query
QueryCache
works properly.
Typically a query will be equal to another only if it's an instance of
the same class and its document-filtering properties are identical that other
instance. Utility methods are provided for certain repetitive code.equals
in class Query
Query.sameClassAs(Object)
,
Query.classHash()
public int hashCode()
Query
QueryCache
works properly.hashCode
in class Query
Query.equals(Object)
public java.lang.String toString(java.lang.String field)
Query
field
assumed to be the
default field and omitted.public Query rewrite(IndexReader reader) throws java.io.IOException
Query
public Weight createWeight(IndexSearcher searcher, boolean needsScores, float boost) throws java.io.IOException
Query
Only implemented by primitive queries, which re-write to themselves.
createWeight
in class Query
needsScores
- True if document scores (Scorer.score()
) are needed.boost
- The boost that is propagated by the parent queries.java.io.IOException
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